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Finding the Fourth Proportional to 487,036.80, 730,670.40 and 154,612.80

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Solution

The fourth proportional to 487,036.80, 730,670.40 and 154,612.80 is: 231,955.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,036.80 : 730,670.40 = 154,612.80 : x
  2. Step 2: Convert to fraction form
    487,036.80/730,670.40 = 154,612.80/x
  3. Step 3: Cross multiply
    487,036.80x = 730,670.40 × 154,612.80
  4. Step 4: Simplify right side
    487,036.80x = 112,970,996,421.12
  5. Step 5: Solve for x
    x = 112,970,996,421.12/487,036.80
  6. Step 6: Final answer
    x = 231,955.77

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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.