Home / 386,020.02-578,389.80-273,140.76

Finding the Fourth Proportional to 386,020.02, 578,389.80 and 273,140.76

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Solution

The fourth proportional to 386,020.02, 578,389.80 and 273,140.76 is: 409,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,020.02 : 578,389.80 = 273,140.76 : x
  2. Step 2: Convert to fraction form
    386,020.02/578,389.80 = 273,140.76/x
  3. Step 3: Cross multiply
    386,020.02x = 578,389.80 × 273,140.76
  4. Step 4: Simplify right side
    386,020.02x = 157,981,829,548.25
  5. Step 5: Solve for x
    x = 157,981,829,548.25/386,020.02
  6. Step 6: Final answer
    x = 409,258.12

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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.