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Finding the Fourth Proportional to 490,945.20, 736,417.80 and 158,521.20

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Solution

The fourth proportional to 490,945.20, 736,417.80 and 158,521.20 is: 237,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,945.20 : 736,417.80 = 158,521.20 : x
  2. Step 2: Convert to fraction form
    490,945.20/736,417.80 = 158,521.20/x
  3. Step 3: Cross multiply
    490,945.20x = 736,417.80 × 158,521.20
  4. Step 4: Simplify right side
    490,945.20x = 116,737,833,357.36
  5. Step 5: Solve for x
    x = 116,737,833,357.36/490,945.20
  6. Step 6: Final answer
    x = 237,781.80

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1.5x scale

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.