Home / 279,120,434.24-385,186,217.76-155,358,455.36

Finding the Fourth Proportional to 279,120,434.24, 385,186,217.76 and 155,358,455.36

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Solution

The fourth proportional to 279,120,434.24, 385,186,217.76 and 155,358,455.36 is: 214,394,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,120,434.24 : 385,186,217.76 = 155,358,455.36 : x
  2. Step 2: Convert to fraction form
    279,120,434.24/385,186,217.76 = 155,358,455.36/x
  3. Step 3: Cross multiply
    279,120,434.24x = 385,186,217.76 × 155,358,455.36
  4. Step 4: Simplify right side
    279,120,434.24x = 59,841,935,817,154,200
  5. Step 5: Solve for x
    x = 59,841,935,817,154,200/279,120,434.24
  6. Step 6: Final answer
    x = 214,394,678.70

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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.