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Finding the Fourth Proportional to 487,031.40, 730,619.69 and 150,043.86

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Solution

The fourth proportional to 487,031.40, 730,619.69 and 150,043.86 is: 225,088.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,031.40 : 730,619.69 = 150,043.86 : x
  2. Step 2: Convert to fraction form
    487,031.40/730,619.69 = 150,043.86/x
  3. Step 3: Cross multiply
    487,031.40x = 730,619.69 × 150,043.86
  4. Step 4: Simplify right side
    487,031.40x = 109,624,997,729.38
  5. Step 5: Solve for x
    x = 109,624,997,729.38/487,031.40
  6. Step 6: Final answer
    x = 225,088.15

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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.