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Finding the Fourth Proportional to 316,889.52, 437,307.80 and 173,650.20

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Solution

The fourth proportional to 316,889.52, 437,307.80 and 173,650.20 is: 239,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,889.52 : 437,307.80 = 173,650.20 : x
  2. Step 2: Convert to fraction form
    316,889.52/437,307.80 = 173,650.20/x
  3. Step 3: Cross multiply
    316,889.52x = 437,307.80 × 173,650.20
  4. Step 4: Simplify right side
    316,889.52x = 75,938,586,931.56
  5. Step 5: Solve for x
    x = 75,938,586,931.56/316,889.52
  6. Step 6: Final answer
    x = 239,637.42

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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.