Home / 280,915.02-387,567.76-159,970.55

Finding the Fourth Proportional to 280,915.02, 387,567.76 and 159,970.55

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Solution

The fourth proportional to 280,915.02, 387,567.76 and 159,970.55 is: 220,705.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,915.02 : 387,567.76 = 159,970.55 : x
  2. Step 2: Convert to fraction form
    280,915.02/387,567.76 = 159,970.55/x
  3. Step 3: Cross multiply
    280,915.02x = 387,567.76 × 159,970.55
  4. Step 4: Simplify right side
    280,915.02x = 61,999,427,729.47
  5. Step 5: Solve for x
    x = 61,999,427,729.47/280,915.02
  6. Step 6: Final answer
    x = 220,705.28

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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.