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Finding the Fourth Proportional to 308,904,666.90, 463,349,915.55 and 155,509,530.90

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Solution

The fourth proportional to 308,904,666.90, 463,349,915.55 and 155,509,530.90 is: 233,260,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,904,666.90 : 463,349,915.55 = 155,509,530.90 : x
  2. Step 2: Convert to fraction form
    308,904,666.90/463,349,915.55 = 155,509,530.90/x
  3. Step 3: Cross multiply
    308,904,666.90x = 463,349,915.55 × 155,509,530.90
  4. Step 4: Simplify right side
    308,904,666.90x = 72,055,328,009,735,120
  5. Step 5: Solve for x
    x = 72,055,328,009,735,120/308,904,666.90
  6. Step 6: Final answer
    x = 233,260,729.70

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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.