Home / 355,103,999.70-532,655,999.55-257,602,290.90

Finding the Fourth Proportional to 355,103,999.70, 532,655,999.55 and 257,602,290.90

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Solution

The fourth proportional to 355,103,999.70, 532,655,999.55 and 257,602,290.90 is: 386,403,436.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,103,999.70 : 532,655,999.55 = 257,602,290.90 : x
  2. Step 2: Convert to fraction form
    355,103,999.70/532,655,999.55 = 257,602,290.90/x
  3. Step 3: Cross multiply
    355,103,999.70x = 532,655,999.55 × 257,602,290.90
  4. Step 4: Simplify right side
    355,103,999.70x = 137,213,405,745,709,376
  5. Step 5: Solve for x
    x = 137,213,405,745,709,376/355,103,999.70
  6. Step 6: Final answer
    x = 386,403,436.35

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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.