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Finding the Fourth Proportional to 296,862.60, 445,812.30 and 287,531.40

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Solution

The fourth proportional to 296,862.60, 445,812.30 and 287,531.40 is: 431,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,862.60 : 445,812.30 = 287,531.40 : x
  2. Step 2: Convert to fraction form
    296,862.60/445,812.30 = 287,531.40/x
  3. Step 3: Cross multiply
    296,862.60x = 445,812.30 × 287,531.40
  4. Step 4: Simplify right side
    296,862.60x = 128,185,034,756.22
  5. Step 5: Solve for x
    x = 128,185,034,756.22/296,862.60
  6. Step 6: Final answer
    x = 431,799.21

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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.