Home / 355,923.40-534,014.70-145,712.20

Finding the Fourth Proportional to 355,923.40, 534,014.70 and 145,712.20

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Solution

The fourth proportional to 355,923.40, 534,014.70 and 145,712.20 is: 218,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,923.40 : 534,014.70 = 145,712.20 : x
  2. Step 2: Convert to fraction form
    355,923.40/534,014.70 = 145,712.20/x
  3. Step 3: Cross multiply
    355,923.40x = 534,014.70 × 145,712.20
  4. Step 4: Simplify right side
    355,923.40x = 77,812,456,769.34
  5. Step 5: Solve for x
    x = 77,812,456,769.34/355,923.40
  6. Step 6: Final answer
    x = 218,621.36

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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.