Home / 218,390,453.71-301,386,263.25-129,158,888.93

Finding the Fourth Proportional to 218,390,453.71, 301,386,263.25 and 129,158,888.93

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Solution

The fourth proportional to 218,390,453.71, 301,386,263.25 and 129,158,888.93 is: 178,243,665.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,390,453.71 : 301,386,263.25 = 129,158,888.93 : x
  2. Step 2: Convert to fraction form
    218,390,453.71/301,386,263.25 = 129,158,888.93/x
  3. Step 3: Cross multiply
    218,390,453.71x = 301,386,263.25 × 129,158,888.93
  4. Step 4: Simplify right side
    218,390,453.71x = 38,926,714,900,134,496
  5. Step 5: Solve for x
    x = 38,926,714,900,134,496/218,390,453.71
  6. Step 6: Final answer
    x = 178,243,665.14

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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.