Home / 218,390,455.71-301,386,266.01-129,158,890.93

Finding the Fourth Proportional to 218,390,455.71, 301,386,266.01 and 129,158,890.93

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Solution

The fourth proportional to 218,390,455.71, 301,386,266.01 and 129,158,890.93 is: 178,243,667.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,390,455.71 : 301,386,266.01 = 129,158,890.93 : x
  2. Step 2: Convert to fraction form
    218,390,455.71/301,386,266.01 = 129,158,890.93/x
  3. Step 3: Cross multiply
    218,390,455.71x = 301,386,266.01 × 129,158,890.93
  4. Step 4: Simplify right side
    218,390,455.71x = 38,926,715,859,385,560
  5. Step 5: Solve for x
    x = 38,926,715,859,385,560/218,390,455.71
  6. Step 6: Final answer
    x = 178,243,667.90

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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.