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Finding the Fourth Proportional to 280,602.60, 387,135.54 and 159,713.64

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Solution

The fourth proportional to 280,602.60, 387,135.54 and 159,713.64 is: 220,350.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,602.60 : 387,135.54 = 159,713.64 : x
  2. Step 2: Convert to fraction form
    280,602.60/387,135.54 = 159,713.64/x
  3. Step 3: Cross multiply
    280,602.60x = 387,135.54 × 159,713.64
  4. Step 4: Simplify right side
    280,602.60x = 61,830,826,266.77
  5. Step 5: Solve for x
    x = 61,830,826,266.77/280,602.60
  6. Step 6: Final answer
    x = 220,350.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.