Home / 398,356,417.80-549,734,258.70-222,155,549.64

Finding the Fourth Proportional to 398,356,417.80, 549,734,258.70 and 222,155,549.64

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Solution

The fourth proportional to 398,356,417.80, 549,734,258.70 and 222,155,549.64 is: 306,575,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,356,417.80 : 549,734,258.70 = 222,155,549.64 : x
  2. Step 2: Convert to fraction form
    398,356,417.80/549,734,258.70 = 222,155,549.64/x
  3. Step 3: Cross multiply
    398,356,417.80x = 549,734,258.70 × 222,155,549.64
  4. Step 4: Simplify right side
    398,356,417.80x = 122,126,516,397,436,448
  5. Step 5: Solve for x
    x = 122,126,516,397,436,448/398,356,417.80
  6. Step 6: Final answer
    x = 306,575,998.13

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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.