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Finding the Fourth Proportional to 397,331.80, 596,688.90 and 210,707.80

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Solution

The fourth proportional to 397,331.80, 596,688.90 and 210,707.80 is: 316,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,331.80 : 596,688.90 = 210,707.80 : x
  2. Step 2: Convert to fraction form
    397,331.80/596,688.90 = 210,707.80/x
  3. Step 3: Cross multiply
    397,331.80x = 596,688.90 × 210,707.80
  4. Step 4: Simplify right side
    397,331.80x = 125,727,005,403.42
  5. Step 5: Solve for x
    x = 125,727,005,403.42/397,331.80
  6. Step 6: Final answer
    x = 316,428.25

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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.