Home / 387,622.10-581,433.15-121,464.20

Finding the Fourth Proportional to 387,622.10, 581,433.15 and 121,464.20

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Solution

The fourth proportional to 387,622.10, 581,433.15 and 121,464.20 is: 182,196.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,622.10 : 581,433.15 = 121,464.20 : x
  2. Step 2: Convert to fraction form
    387,622.10/581,433.15 = 121,464.20/x
  3. Step 3: Cross multiply
    387,622.10x = 581,433.15 × 121,464.20
  4. Step 4: Simplify right side
    387,622.10x = 70,623,312,418.23
  5. Step 5: Solve for x
    x = 70,623,312,418.23/387,622.10
  6. Step 6: Final answer
    x = 182,196.30

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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.