Home / 343,318.20-514,977.30-312,905.40

Finding the Fourth Proportional to 343,318.20, 514,977.30 and 312,905.40

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Solution

The fourth proportional to 343,318.20, 514,977.30 and 312,905.40 is: 469,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,318.20 : 514,977.30 = 312,905.40 : x
  2. Step 2: Convert to fraction form
    343,318.20/514,977.30 = 312,905.40/x
  3. Step 3: Cross multiply
    343,318.20x = 514,977.30 × 312,905.40
  4. Step 4: Simplify right side
    343,318.20x = 161,139,178,047.42
  5. Step 5: Solve for x
    x = 161,139,178,047.42/343,318.20
  6. Step 6: Final answer
    x = 469,358.10

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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.