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Finding the Fourth Proportional to 397,999.19, 549,234.10 and 216,711.07

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Solution

The fourth proportional to 397,999.19, 549,234.10 and 216,711.07 is: 299,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,999.19 : 549,234.10 = 216,711.07 : x
  2. Step 2: Convert to fraction form
    397,999.19/549,234.10 = 216,711.07/x
  3. Step 3: Cross multiply
    397,999.19x = 549,234.10 × 216,711.07
  4. Step 4: Simplify right side
    397,999.19x = 119,025,108,389.29
  5. Step 5: Solve for x
    x = 119,025,108,389.29/397,999.19
  6. Step 6: Final answer
    x = 299,058.67

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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.