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Finding the Fourth Proportional to 393,312.45, 588,492.45 and 260,452.20

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Solution

The fourth proportional to 393,312.45, 588,492.45 and 260,452.20 is: 389,700.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,312.45 : 588,492.45 = 260,452.20 : x
  2. Step 2: Convert to fraction form
    393,312.45/588,492.45 = 260,452.20/x
  3. Step 3: Cross multiply
    393,312.45x = 588,492.45 × 260,452.20
  4. Step 4: Simplify right side
    393,312.45x = 153,274,153,285.89
  5. Step 5: Solve for x
    x = 153,274,153,285.89/393,312.45
  6. Step 6: Final answer
    x = 389,700.74

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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.