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Finding the Fourth Proportional to 402,748.60, 604,122.90 and 270,038.20

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Solution

The fourth proportional to 402,748.60, 604,122.90 and 270,038.20 is: 405,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,748.60 : 604,122.90 = 270,038.20 : x
  2. Step 2: Convert to fraction form
    402,748.60/604,122.90 = 270,038.20/x
  3. Step 3: Cross multiply
    402,748.60x = 604,122.90 × 270,038.20
  4. Step 4: Simplify right side
    402,748.60x = 163,136,260,494.78
  5. Step 5: Solve for x
    x = 163,136,260,494.78/402,748.60
  6. Step 6: Final answer
    x = 405,057.30

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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.