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Finding the Fourth Proportional to 495,200.40, 742,800.60 and 258,615.60

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Solution

The fourth proportional to 495,200.40, 742,800.60 and 258,615.60 is: 387,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,200.40 : 742,800.60 = 258,615.60 : x
  2. Step 2: Convert to fraction form
    495,200.40/742,800.60 = 258,615.60/x
  3. Step 3: Cross multiply
    495,200.40x = 742,800.60 × 258,615.60
  4. Step 4: Simplify right side
    495,200.40x = 192,099,822,849.36
  5. Step 5: Solve for x
    x = 192,099,822,849.36/495,200.40
  6. Step 6: Final answer
    x = 387,923.40

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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.