Home / 258,048,015.20-387,072,022.80-209,675,074.40

Finding the Fourth Proportional to 258,048,015.20, 387,072,022.80 and 209,675,074.40

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Solution

The fourth proportional to 258,048,015.20, 387,072,022.80 and 209,675,074.40 is: 314,512,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,048,015.20 : 387,072,022.80 = 209,675,074.40 : x
  2. Step 2: Convert to fraction form
    258,048,015.20/387,072,022.80 = 209,675,074.40/x
  3. Step 3: Cross multiply
    258,048,015.20x = 387,072,022.80 × 209,675,074.40
  4. Step 4: Simplify right side
    258,048,015.20x = 81,159,355,178,748,496
  5. Step 5: Solve for x
    x = 81,159,355,178,748,496/258,048,015.20
  6. Step 6: Final answer
    x = 314,512,611.60

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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.