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Finding the Fourth Proportional to 470,959.20, 706,438.80 and 282,002.40

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Solution

The fourth proportional to 470,959.20, 706,438.80 and 282,002.40 is: 423,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,959.20 : 706,438.80 = 282,002.40 : x
  2. Step 2: Convert to fraction form
    470,959.20/706,438.80 = 282,002.40/x
  3. Step 3: Cross multiply
    470,959.20x = 706,438.80 × 282,002.40
  4. Step 4: Simplify right side
    470,959.20x = 199,217,437,053.12
  5. Step 5: Solve for x
    x = 199,217,437,053.12/470,959.20
  6. Step 6: Final answer
    x = 423,003.60

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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.