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Finding the Fourth Proportional to 402,648.72, 604,439.64 and 216,024.72

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Solution

The fourth proportional to 402,648.72, 604,439.64 and 216,024.72 is: 324,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,648.72 : 604,439.64 = 216,024.72 : x
  2. Step 2: Convert to fraction form
    402,648.72/604,439.64 = 216,024.72/x
  3. Step 3: Cross multiply
    402,648.72x = 604,439.64 × 216,024.72
  4. Step 4: Simplify right side
    402,648.72x = 130,573,903,987.90
  5. Step 5: Solve for x
    x = 130,573,903,987.90/402,648.72
  6. Step 6: Final answer
    x = 324,287.39

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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.