Home / 387,795.12-581,675.76-121,549.56

Finding the Fourth Proportional to 387,795.12, 581,675.76 and 121,549.56

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Solution

The fourth proportional to 387,795.12, 581,675.76 and 121,549.56 is: 182,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,795.12 : 581,675.76 = 121,549.56 : x
  2. Step 2: Convert to fraction form
    387,795.12/581,675.76 = 121,549.56/x
  3. Step 3: Cross multiply
    387,795.12x = 581,675.76 × 121,549.56
  4. Step 4: Simplify right side
    387,795.12x = 70,702,432,690.67
  5. Step 5: Solve for x
    x = 70,702,432,690.67/387,795.12
  6. Step 6: Final answer
    x = 182,319.04

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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.