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Finding the Fourth Proportional to 343,409.46, 474,003.90 and 207,421.80

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Solution

The fourth proportional to 343,409.46, 474,003.90 and 207,421.80 is: 286,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,409.46 : 474,003.90 = 207,421.80 : x
  2. Step 2: Convert to fraction form
    343,409.46/474,003.90 = 207,421.80/x
  3. Step 3: Cross multiply
    343,409.46x = 474,003.90 × 207,421.80
  4. Step 4: Simplify right side
    343,409.46x = 98,318,742,145.02
  5. Step 5: Solve for x
    x = 98,318,742,145.02/343,409.46
  6. Step 6: Final answer
    x = 286,301.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.