Home / 287,069.31-430,666.19-87,384.47

Finding the Fourth Proportional to 287,069.31, 430,666.19 and 87,384.47

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Solution

The fourth proportional to 287,069.31, 430,666.19 and 87,384.47 is: 131,095.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,069.31 : 430,666.19 = 87,384.47 : x
  2. Step 2: Convert to fraction form
    287,069.31/430,666.19 = 87,384.47/x
  3. Step 3: Cross multiply
    287,069.31x = 430,666.19 × 87,384.47
  4. Step 4: Simplify right side
    287,069.31x = 37,633,536,541.61
  5. Step 5: Solve for x
    x = 37,633,536,541.61/287,069.31
  6. Step 6: Final answer
    x = 131,095.65

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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.