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Finding the Fourth Proportional to 630,125.95, 869,539.17 and 358,156.03

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Solution

The fourth proportional to 630,125.95, 869,539.17 and 358,156.03 is: 494,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,125.95 : 869,539.17 = 358,156.03 : x
  2. Step 2: Convert to fraction form
    630,125.95/869,539.17 = 358,156.03/x
  3. Step 3: Cross multiply
    630,125.95x = 869,539.17 × 358,156.03
  4. Step 4: Simplify right side
    630,125.95x = 311,430,697,056.70
  5. Step 5: Solve for x
    x = 311,430,697,056.70/630,125.95
  6. Step 6: Final answer
    x = 494,235.63

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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.