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Finding the Fourth Proportional to 387,003.40, 580,505.10 and 235,444.30

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Solution

The fourth proportional to 387,003.40, 580,505.10 and 235,444.30 is: 353,166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,003.40 : 580,505.10 = 235,444.30 : x
  2. Step 2: Convert to fraction form
    387,003.40/580,505.10 = 235,444.30/x
  3. Step 3: Cross multiply
    387,003.40x = 580,505.10 × 235,444.30
  4. Step 4: Simplify right side
    387,003.40x = 136,676,616,915.93
  5. Step 5: Solve for x
    x = 136,676,616,915.93/387,003.40
  6. Step 6: Final answer
    x = 353,166.45

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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.