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Finding the Fourth Proportional to 495,482.20, 742,030.62 and 281,727.20

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Solution

The fourth proportional to 495,482.20, 742,030.62 and 281,727.20 is: 421,912.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,482.20 : 742,030.62 = 281,727.20 : x
  2. Step 2: Convert to fraction form
    495,482.20/742,030.62 = 281,727.20/x
  3. Step 3: Cross multiply
    495,482.20x = 742,030.62 × 281,727.20
  4. Step 4: Simplify right side
    495,482.20x = 209,050,208,886.86
  5. Step 5: Solve for x
    x = 209,050,208,886.86/495,482.20
  6. Step 6: Final answer
    x = 421,912.65

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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.