Home / 398,546,128.16-549,925,543.28-231,244,035.76

Finding the Fourth Proportional to 398,546,128.16, 549,925,543.28 and 231,244,035.76

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Solution

The fourth proportional to 398,546,128.16, 549,925,543.28 and 231,244,035.76 is: 319,077,248.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,546,128.16 : 549,925,543.28 = 231,244,035.76 : x
  2. Step 2: Convert to fraction form
    398,546,128.16/549,925,543.28 = 231,244,035.76/x
  3. Step 3: Cross multiply
    398,546,128.16x = 549,925,543.28 × 231,244,035.76
  4. Step 4: Simplify right side
    398,546,128.16x = 127,167,001,995,577,728
  5. Step 5: Solve for x
    x = 127,167,001,995,577,728/398,546,128.16
  6. Step 6: Final answer
    x = 319,077,248.56

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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.