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Finding the Fourth Proportional to 157,368.40, 217,040.52 and 144,248.56

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Solution

The fourth proportional to 157,368.40, 217,040.52 and 144,248.56 is: 198,945.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,368.40 : 217,040.52 = 144,248.56 : x
  2. Step 2: Convert to fraction form
    157,368.40/217,040.52 = 144,248.56/x
  3. Step 3: Cross multiply
    157,368.40x = 217,040.52 × 144,248.56
  4. Step 4: Simplify right side
    157,368.40x = 31,307,782,471.65
  5. Step 5: Solve for x
    x = 31,307,782,471.65/157,368.40
  6. Step 6: Final answer
    x = 198,945.80

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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.