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Finding the Fourth Proportional to 342,658,792.80, 472,877,358.48 and 186,032,501.28

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Solution

The fourth proportional to 342,658,792.80, 472,877,358.48 and 186,032,501.28 is: 256,729,316.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,658,792.80 : 472,877,358.48 = 186,032,501.28 : x
  2. Step 2: Convert to fraction form
    342,658,792.80/472,877,358.48 = 186,032,501.28/x
  3. Step 3: Cross multiply
    342,658,792.80x = 472,877,358.48 × 186,032,501.28
  4. Step 4: Simplify right side
    342,658,792.80x = 87,970,557,796,713,616
  5. Step 5: Solve for x
    x = 87,970,557,796,713,616/342,658,792.80
  6. Step 6: Final answer
    x = 256,729,316.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.