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Finding the Fourth Proportional to 390,938.28, 585,340.88 and 295,880.93

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Solution

The fourth proportional to 390,938.28, 585,340.88 and 295,880.93 is: 443,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,938.28 : 585,340.88 = 295,880.93 : x
  2. Step 2: Convert to fraction form
    390,938.28/585,340.88 = 295,880.93/x
  3. Step 3: Cross multiply
    390,938.28x = 585,340.88 × 295,880.93
  4. Step 4: Simplify right side
    390,938.28x = 173,191,201,748.40
  5. Step 5: Solve for x
    x = 173,191,201,748.40/390,938.28
  6. Step 6: Final answer
    x = 443,014.18

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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.