Home / 284,312.14-392,345.60-156,985

Finding the Fourth Proportional to 284,312.14, 392,345.60 and 156,985

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Solution

The fourth proportional to 284,312.14, 392,345.60 and 156,985 is: 216,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,312.14 : 392,345.60 = 156,985 : x
  2. Step 2: Convert to fraction form
    284,312.14/392,345.60 = 156,985/x
  3. Step 3: Cross multiply
    284,312.14x = 392,345.60 × 156,985
  4. Step 4: Simplify right side
    284,312.14x = 61,592,374,016
  5. Step 5: Solve for x
    x = 61,592,374,016/284,312.14
  6. Step 6: Final answer
    x = 216,636.45

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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.