Home / 398,196,366.12-549,482,925.06-221,976,566.60

Finding the Fourth Proportional to 398,196,366.12, 549,482,925.06 and 221,976,566.60

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Solution

The fourth proportional to 398,196,366.12, 549,482,925.06 and 221,976,566.60 is: 306,312,019.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,196,366.12 : 549,482,925.06 = 221,976,566.60 : x
  2. Step 2: Convert to fraction form
    398,196,366.12/549,482,925.06 = 221,976,566.60/x
  3. Step 3: Cross multiply
    398,196,366.12x = 549,482,925.06 × 221,976,566.60
  4. Step 4: Simplify right side
    398,196,366.12x = 121,972,333,110,143,888
  5. Step 5: Solve for x
    x = 121,972,333,110,143,888/398,196,366.12
  6. Step 6: Final answer
    x = 306,312,019.62

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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.