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Finding the Fourth Proportional to 343,287.60, 514,931.40 and 231,313.20

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Solution

The fourth proportional to 343,287.60, 514,931.40 and 231,313.20 is: 346,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,287.60 : 514,931.40 = 231,313.20 : x
  2. Step 2: Convert to fraction form
    343,287.60/514,931.40 = 231,313.20/x
  3. Step 3: Cross multiply
    343,287.60x = 514,931.40 × 231,313.20
  4. Step 4: Simplify right side
    343,287.60x = 119,110,429,914.48
  5. Step 5: Solve for x
    x = 119,110,429,914.48/343,287.60
  6. Step 6: Final answer
    x = 346,969.80

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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.