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Finding the Fourth Proportional to 369,045.72, 509,378.10 and 240,305.54

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Solution

The fourth proportional to 369,045.72, 509,378.10 and 240,305.54 is: 331,683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,045.72 : 509,378.10 = 240,305.54 : x
  2. Step 2: Convert to fraction form
    369,045.72/509,378.10 = 240,305.54/x
  3. Step 3: Cross multiply
    369,045.72x = 509,378.10 × 240,305.54
  4. Step 4: Simplify right side
    369,045.72x = 122,406,376,837.78
  5. Step 5: Solve for x
    x = 122,406,376,837.78/369,045.72
  6. Step 6: Final answer
    x = 331,683.50

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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.