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Finding the Fourth Proportional to 343,409.90, 515,114.85 and 291,569.90

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Solution

The fourth proportional to 343,409.90, 515,114.85 and 291,569.90 is: 437,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,409.90 : 515,114.85 = 291,569.90 : x
  2. Step 2: Convert to fraction form
    343,409.90/515,114.85 = 291,569.90/x
  3. Step 3: Cross multiply
    343,409.90x = 515,114.85 × 291,569.90
  4. Step 4: Simplify right side
    343,409.90x = 150,191,985,303.02
  5. Step 5: Solve for x
    x = 150,191,985,303.02/343,409.90
  6. Step 6: Final answer
    x = 437,354.85

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1.5x scale

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.