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Finding the Fourth Proportional to 316,688.49, 437,013.45 and 173,445.48

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Solution

The fourth proportional to 316,688.49, 437,013.45 and 173,445.48 is: 239,345.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,688.49 : 437,013.45 = 173,445.48 : x
  2. Step 2: Convert to fraction form
    316,688.49/437,013.45 = 173,445.48/x
  3. Step 3: Cross multiply
    316,688.49x = 437,013.45 × 173,445.48
  4. Step 4: Simplify right side
    316,688.49x = 75,798,007,601.71
  5. Step 5: Solve for x
    x = 75,798,007,601.71/316,688.49
  6. Step 6: Final answer
    x = 239,345.63

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1.5x scale

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.