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Finding the Fourth Proportional to 390,598.81, 539,028.68 and 227,352.22

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Solution

The fourth proportional to 390,598.81, 539,028.68 and 227,352.22 is: 313,747.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,598.81 : 539,028.68 = 227,352.22 : x
  2. Step 2: Convert to fraction form
    390,598.81/539,028.68 = 227,352.22/x
  3. Step 3: Cross multiply
    390,598.81x = 539,028.68 × 227,352.22
  4. Step 4: Simplify right side
    390,598.81x = 122,549,364,557.34
  5. Step 5: Solve for x
    x = 122,549,364,557.34/390,598.81
  6. Step 6: Final answer
    x = 313,747.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.