Home / 398,444.74-549,839.67-217,153.07

Finding the Fourth Proportional to 398,444.74, 549,839.67 and 217,153.07

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Solution

The fourth proportional to 398,444.74, 549,839.67 and 217,153.07 is: 299,663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,444.74 : 549,839.67 = 217,153.07 : x
  2. Step 2: Convert to fraction form
    398,444.74/549,839.67 = 217,153.07/x
  3. Step 3: Cross multiply
    398,444.74x = 549,839.67 × 217,153.07
  4. Step 4: Simplify right side
    398,444.74x = 119,399,372,891.17
  5. Step 5: Solve for x
    x = 119,399,372,891.17/398,444.74
  6. Step 6: Final answer
    x = 299,663.57

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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.