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Finding the Fourth Proportional to 287,937.18, 431,901.72 and 130,055.22

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Solution

The fourth proportional to 287,937.18, 431,901.72 and 130,055.22 is: 195,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,937.18 : 431,901.72 = 130,055.22 : x
  2. Step 2: Convert to fraction form
    287,937.18/431,901.72 = 130,055.22/x
  3. Step 3: Cross multiply
    287,937.18x = 431,901.72 × 130,055.22
  4. Step 4: Simplify right side
    287,937.18x = 56,171,073,212.98
  5. Step 5: Solve for x
    x = 56,171,073,212.98/287,937.18
  6. Step 6: Final answer
    x = 195,081.00

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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.