Home / 390,533,651.28-538,900,819.96-231,736,412.34

Finding the Fourth Proportional to 390,533,651.28, 538,900,819.96 and 231,736,412.34

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Solution

The fourth proportional to 390,533,651.28, 538,900,819.96 and 231,736,412.34 is: 319,775,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,533,651.28 : 538,900,819.96 = 231,736,412.34 : x
  2. Step 2: Convert to fraction form
    390,533,651.28/538,900,819.96 = 231,736,412.34/x
  3. Step 3: Cross multiply
    390,533,651.28x = 538,900,819.96 × 231,736,412.34
  4. Step 4: Simplify right side
    390,533,651.28x = 124,882,942,624,614,672
  5. Step 5: Solve for x
    x = 124,882,942,624,614,672/390,533,651.28
  6. Step 6: Final answer
    x = 319,775,113.40

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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.