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Finding the Fourth Proportional to 405,475.20, 608,220.90 and 105,937.20

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Solution

The fourth proportional to 405,475.20, 608,220.90 and 105,937.20 is: 158,907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,475.20 : 608,220.90 = 105,937.20 : x
  2. Step 2: Convert to fraction form
    405,475.20/608,220.90 = 105,937.20/x
  3. Step 3: Cross multiply
    405,475.20x = 608,220.90 × 105,937.20
  4. Step 4: Simplify right side
    405,475.20x = 64,433,219,127.48
  5. Step 5: Solve for x
    x = 64,433,219,127.48/405,475.20
  6. Step 6: Final answer
    x = 158,907.92

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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.