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Finding the Fourth Proportional to 208,359.19, 287,477.35 and 130,843.20

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Solution

The fourth proportional to 208,359.19, 287,477.35 and 130,843.20 is: 180,526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,359.19 : 287,477.35 = 130,843.20 : x
  2. Step 2: Convert to fraction form
    208,359.19/287,477.35 = 130,843.20/x
  3. Step 3: Cross multiply
    208,359.19x = 287,477.35 × 130,843.20
  4. Step 4: Simplify right side
    208,359.19x = 37,614,454,309.92
  5. Step 5: Solve for x
    x = 37,614,454,309.92/208,359.19
  6. Step 6: Final answer
    x = 180,526.98

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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.