Home / 255,638,015.20-383,457,022.80-163,805,010.40

Finding the Fourth Proportional to 255,638,015.20, 383,457,022.80 and 163,805,010.40

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Solution

The fourth proportional to 255,638,015.20, 383,457,022.80 and 163,805,010.40 is: 245,707,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,638,015.20 : 383,457,022.80 = 163,805,010.40 : x
  2. Step 2: Convert to fraction form
    255,638,015.20/383,457,022.80 = 163,805,010.40/x
  3. Step 3: Cross multiply
    255,638,015.20x = 383,457,022.80 × 163,805,010.40
  4. Step 4: Simplify right side
    255,638,015.20x = 62,812,181,607,707,040
  5. Step 5: Solve for x
    x = 62,812,181,607,707,040/255,638,015.20
  6. Step 6: Final answer
    x = 245,707,515.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.