Home / 145,621.40-218,432.18-40,440.36

Finding the Fourth Proportional to 145,621.40, 218,432.18 and 40,440.36

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Solution

The fourth proportional to 145,621.40, 218,432.18 and 40,440.36 is: 60,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,621.40 : 218,432.18 = 40,440.36 : x
  2. Step 2: Convert to fraction form
    145,621.40/218,432.18 = 40,440.36/x
  3. Step 3: Cross multiply
    145,621.40x = 218,432.18 × 40,440.36
  4. Step 4: Simplify right side
    145,621.40x = 8,833,475,994.78
  5. Step 5: Solve for x
    x = 8,833,475,994.78/145,621.40
  6. Step 6: Final answer
    x = 60,660.56

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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.