Home / 385,374,062.66-531,816,465.55-209,162,060.52

Finding the Fourth Proportional to 385,374,062.66, 531,816,465.55 and 209,162,060.52

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Solution

The fourth proportional to 385,374,062.66, 531,816,465.55 and 209,162,060.52 is: 288,643,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,374,062.66 : 531,816,465.55 = 209,162,060.52 : x
  2. Step 2: Convert to fraction form
    385,374,062.66/531,816,465.55 = 209,162,060.52/x
  3. Step 3: Cross multiply
    385,374,062.66x = 531,816,465.55 × 209,162,060.52
  4. Step 4: Simplify right side
    385,374,062.66x = 111,235,827,752,901,600
  5. Step 5: Solve for x
    x = 111,235,827,752,901,600/385,374,062.66
  6. Step 6: Final answer
    x = 288,643,784.13

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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.