Home / 257,443,806.40-386,128,384.80-75,672,030.40

Finding the Fourth Proportional to 257,443,806.40, 386,128,384.80 and 75,672,030.40

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Solution

The fourth proportional to 257,443,806.40, 386,128,384.80 and 75,672,030.40 is: 113,497,074.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,443,806.40 : 386,128,384.80 = 75,672,030.40 : x
  2. Step 2: Convert to fraction form
    257,443,806.40/386,128,384.80 = 75,672,030.40/x
  3. Step 3: Cross multiply
    257,443,806.40x = 386,128,384.80 × 75,672,030.40
  4. Step 4: Simplify right side
    257,443,806.40x = 29,219,118,872,888,500
  5. Step 5: Solve for x
    x = 29,219,118,872,888,500/257,443,806.40
  6. Step 6: Final answer
    x = 113,497,074.49

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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.