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Finding the Fourth Proportional to 308,904,630.40, 463,349,860.80 and 155,509,494.40

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Solution

The fourth proportional to 308,904,630.40, 463,349,860.80 and 155,509,494.40 is: 233,260,674.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,904,630.40 : 463,349,860.80 = 155,509,494.40 : x
  2. Step 2: Convert to fraction form
    308,904,630.40/463,349,860.80 = 155,509,494.40/x
  3. Step 3: Cross multiply
    308,904,630.40x = 463,349,860.80 × 155,509,494.40
  4. Step 4: Simplify right side
    308,904,630.40x = 72,055,302,583,318,384
  5. Step 5: Solve for x
    x = 72,055,302,583,318,384/308,904,630.40
  6. Step 6: Final answer
    x = 233,260,674.95

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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.