Home / 280,916.02-387,569.14-159,971.55

Finding the Fourth Proportional to 280,916.02, 387,569.14 and 159,971.55

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Solution

The fourth proportional to 280,916.02, 387,569.14 and 159,971.55 is: 220,706.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,916.02 : 387,569.14 = 159,971.55 : x
  2. Step 2: Convert to fraction form
    280,916.02/387,569.14 = 159,971.55/x
  3. Step 3: Cross multiply
    280,916.02x = 387,569.14 × 159,971.55
  4. Step 4: Simplify right side
    280,916.02x = 62,000,036,057.97
  5. Step 5: Solve for x
    x = 62,000,036,057.97/280,916.02
  6. Step 6: Final answer
    x = 220,706.66

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1.5x scale

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.