Home / 287,233.16-430,849.40-76,865.62

Finding the Fourth Proportional to 287,233.16, 430,849.40 and 76,865.62

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Solution

The fourth proportional to 287,233.16, 430,849.40 and 76,865.62 is: 115,298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,233.16 : 430,849.40 = 76,865.62 : x
  2. Step 2: Convert to fraction form
    287,233.16/430,849.40 = 76,865.62/x
  3. Step 3: Cross multiply
    287,233.16x = 430,849.40 × 76,865.62
  4. Step 4: Simplify right side
    287,233.16x = 33,117,506,257.63
  5. Step 5: Solve for x
    x = 33,117,506,257.63/287,233.16
  6. Step 6: Final answer
    x = 115,298.34

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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.