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Finding the Fourth Proportional to 390,677.94, 539,038.35 and 227,361.24

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Solution

The fourth proportional to 390,677.94, 539,038.35 and 227,361.24 is: 313,701.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,677.94 : 539,038.35 = 227,361.24 : x
  2. Step 2: Convert to fraction form
    390,677.94/539,038.35 = 227,361.24/x
  3. Step 3: Cross multiply
    390,677.94x = 539,038.35 × 227,361.24
  4. Step 4: Simplify right side
    390,677.94x = 122,556,427,663.55
  5. Step 5: Solve for x
    x = 122,556,427,663.55/390,677.94
  6. Step 6: Final answer
    x = 313,701.94

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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.