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Finding the Fourth Proportional to 495,300.30, 742,950.45 and 140,309.70

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Solution

The fourth proportional to 495,300.30, 742,950.45 and 140,309.70 is: 210,464.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,300.30 : 742,950.45 = 140,309.70 : x
  2. Step 2: Convert to fraction form
    495,300.30/742,950.45 = 140,309.70/x
  3. Step 3: Cross multiply
    495,300.30x = 742,950.45 × 140,309.70
  4. Step 4: Simplify right side
    495,300.30x = 104,243,154,754.37
  5. Step 5: Solve for x
    x = 104,243,154,754.37/495,300.30
  6. Step 6: Final answer
    x = 210,464.55

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Similar ratio
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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.