Home / 268,272,000.40-402,408,000.60-257,690,419.60

Finding the Fourth Proportional to 268,272,000.40, 402,408,000.60 and 257,690,419.60

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Solution

The fourth proportional to 268,272,000.40, 402,408,000.60 and 257,690,419.60 is: 386,535,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,272,000.40 : 402,408,000.60 = 257,690,419.60 : x
  2. Step 2: Convert to fraction form
    268,272,000.40/402,408,000.60 = 257,690,419.60/x
  3. Step 3: Cross multiply
    268,272,000.40x = 402,408,000.60 × 257,690,419.60
  4. Step 4: Simplify right side
    268,272,000.40x = 103,696,686,525,011,056
  5. Step 5: Solve for x
    x = 103,696,686,525,011,056/268,272,000.40
  6. Step 6: Final answer
    x = 386,535,629.40

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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.