Home / 398,051,690.42-549,312,997.20-219,431,657.76

Finding the Fourth Proportional to 398,051,690.42, 549,312,997.20 and 219,431,657.76

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Solution

The fourth proportional to 398,051,690.42, 549,312,997.20 and 219,431,657.76 is: 302,816,605.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,051,690.42 : 549,312,997.20 = 219,431,657.76 : x
  2. Step 2: Convert to fraction form
    398,051,690.42/549,312,997.20 = 219,431,657.76/x
  3. Step 3: Cross multiply
    398,051,690.42x = 549,312,997.20 × 219,431,657.76
  4. Step 4: Simplify right side
    398,051,690.42x = 120,536,661,601,827,440
  5. Step 5: Solve for x
    x = 120,536,661,601,827,440/398,051,690.42
  6. Step 6: Final answer
    x = 302,816,605.24

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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.