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Finding the Fourth Proportional to 255,698.71, 383,547.75 and 68,710.21

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Solution

The fourth proportional to 255,698.71, 383,547.75 and 68,710.21 is: 103,065.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,698.71 : 383,547.75 = 68,710.21 : x
  2. Step 2: Convert to fraction form
    255,698.71/383,547.75 = 68,710.21/x
  3. Step 3: Cross multiply
    255,698.71x = 383,547.75 × 68,710.21
  4. Step 4: Simplify right side
    255,698.71x = 26,353,646,447.53
  5. Step 5: Solve for x
    x = 26,353,646,447.53/255,698.71
  6. Step 6: Final answer
    x = 103,065.23

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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.