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Finding the Fourth Proportional to 495,271.80, 742,907.70 and 121,294.80

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Solution

The fourth proportional to 495,271.80, 742,907.70 and 121,294.80 is: 181,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,271.80 : 742,907.70 = 121,294.80 : x
  2. Step 2: Convert to fraction form
    495,271.80/742,907.70 = 121,294.80/x
  3. Step 3: Cross multiply
    495,271.80x = 742,907.70 × 121,294.80
  4. Step 4: Simplify right side
    495,271.80x = 90,110,840,889.96
  5. Step 5: Solve for x
    x = 90,110,840,889.96/495,271.80
  6. Step 6: Final answer
    x = 181,942.20

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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.