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Finding the Fourth Proportional to 660,329.52, 990,887.76 and 239,638.20

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Solution

The fourth proportional to 660,329.52, 990,887.76 and 239,638.20 is: 359,600.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,329.52 : 990,887.76 = 239,638.20 : x
  2. Step 2: Convert to fraction form
    660,329.52/990,887.76 = 239,638.20/x
  3. Step 3: Cross multiply
    660,329.52x = 990,887.76 × 239,638.20
  4. Step 4: Simplify right side
    660,329.52x = 237,454,559,208.43
  5. Step 5: Solve for x
    x = 237,454,559,208.43/660,329.52
  6. Step 6: Final answer
    x = 359,600.10

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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.