Home / 387,100.16-580,650.02-120,883.49

Finding the Fourth Proportional to 387,100.16, 580,650.02 and 120,883.49

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Solution

The fourth proportional to 387,100.16, 580,650.02 and 120,883.49 is: 181,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,100.16 : 580,650.02 = 120,883.49 : x
  2. Step 2: Convert to fraction form
    387,100.16/580,650.02 = 120,883.49/x
  3. Step 3: Cross multiply
    387,100.16x = 580,650.02 × 120,883.49
  4. Step 4: Simplify right side
    387,100.16x = 70,191,000,689.22
  5. Step 5: Solve for x
    x = 70,191,000,689.22/387,100.16
  6. Step 6: Final answer
    x = 181,325.17

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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.