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Finding the Fourth Proportional to 264,719.40, 397,079.10 and 140,303.40

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Solution

The fourth proportional to 264,719.40, 397,079.10 and 140,303.40 is: 210,455.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,719.40 : 397,079.10 = 140,303.40 : x
  2. Step 2: Convert to fraction form
    264,719.40/397,079.10 = 140,303.40/x
  3. Step 3: Cross multiply
    264,719.40x = 397,079.10 × 140,303.40
  4. Step 4: Simplify right side
    264,719.40x = 55,711,547,798.94
  5. Step 5: Solve for x
    x = 55,711,547,798.94/264,719.40
  6. Step 6: Final answer
    x = 210,455.10

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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.