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Finding the Fourth Proportional to 578,271.16, 868,399.38 and 354,943

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Solution

The fourth proportional to 578,271.16, 868,399.38 and 354,943 is: 533,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,271.16 : 868,399.38 = 354,943 : x
  2. Step 2: Convert to fraction form
    578,271.16/868,399.38 = 354,943/x
  3. Step 3: Cross multiply
    578,271.16x = 868,399.38 × 354,943
  4. Step 4: Simplify right side
    578,271.16x = 308,232,281,135.34
  5. Step 5: Solve for x
    x = 308,232,281,135.34/578,271.16
  6. Step 6: Final answer
    x = 533,023.78

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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.