Home / 282,478.20-389,931-169,279.08

Finding the Fourth Proportional to 282,478.20, 389,931 and 169,279.08

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Solution

The fourth proportional to 282,478.20, 389,931 and 169,279.08 is: 233,671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,478.20 : 389,931 = 169,279.08 : x
  2. Step 2: Convert to fraction form
    282,478.20/389,931 = 169,279.08/x
  3. Step 3: Cross multiply
    282,478.20x = 389,931 × 169,279.08
  4. Step 4: Simplify right side
    282,478.20x = 66,007,160,943.48
  5. Step 5: Solve for x
    x = 66,007,160,943.48/282,478.20
  6. Step 6: Final answer
    x = 233,671.70

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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.