Home / 387,991,089.81-581,981,153.18-180,613,511.42

Finding the Fourth Proportional to 387,991,089.81, 581,981,153.18 and 180,613,511.42

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Solution

The fourth proportional to 387,991,089.81, 581,981,153.18 and 180,613,511.42 is: 270,917,715.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,991,089.81 : 581,981,153.18 = 180,613,511.42 : x
  2. Step 2: Convert to fraction form
    387,991,089.81/581,981,153.18 = 180,613,511.42/x
  3. Step 3: Cross multiply
    387,991,089.81x = 581,981,153.18 × 180,613,511.42
  4. Step 4: Simplify right side
    387,991,089.81x = 105,113,659,652,287,712
  5. Step 5: Solve for x
    x = 105,113,659,652,287,712/387,991,089.81
  6. Step 6: Final answer
    x = 270,917,715.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.