Home / 279,817.18-386,136.48-152,490.04

Finding the Fourth Proportional to 279,817.18, 386,136.48 and 152,490.04

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Solution

The fourth proportional to 279,817.18, 386,136.48 and 152,490.04 is: 210,430.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,817.18 : 386,136.48 = 152,490.04 : x
  2. Step 2: Convert to fraction form
    279,817.18/386,136.48 = 152,490.04/x
  3. Step 3: Cross multiply
    279,817.18x = 386,136.48 × 152,490.04
  4. Step 4: Simplify right side
    279,817.18x = 58,881,967,280.66
  5. Step 5: Solve for x
    x = 58,881,967,280.66/279,817.18
  6. Step 6: Final answer
    x = 210,430.14

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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.