Home / 515,180.40-772,840.95-178,130.55

Finding the Fourth Proportional to 515,180.40, 772,840.95 and 178,130.55

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Solution

The fourth proportional to 515,180.40, 772,840.95 and 178,130.55 is: 267,220.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,180.40 : 772,840.95 = 178,130.55 : x
  2. Step 2: Convert to fraction form
    515,180.40/772,840.95 = 178,130.55/x
  3. Step 3: Cross multiply
    515,180.40x = 772,840.95 × 178,130.55
  4. Step 4: Simplify right side
    515,180.40x = 137,666,584,921.28
  5. Step 5: Solve for x
    x = 137,666,584,921.28/515,180.40
  6. Step 6: Final answer
    x = 267,220.15

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1.5x scale

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.