Home / 287,204.16-430,812-76,841.76

Finding the Fourth Proportional to 287,204.16, 430,812 and 76,841.76

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Solution

The fourth proportional to 287,204.16, 430,812 and 76,841.76 is: 115,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,204.16 : 430,812 = 76,841.76 : x
  2. Step 2: Convert to fraction form
    287,204.16/430,812 = 76,841.76/x
  3. Step 3: Cross multiply
    287,204.16x = 430,812 × 76,841.76
  4. Step 4: Simplify right side
    287,204.16x = 33,104,352,309.12
  5. Step 5: Solve for x
    x = 33,104,352,309.12/287,204.16
  6. Step 6: Final answer
    x = 115,264.18

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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.