Home / 399,209.45-549,510.67-348,132.06

Finding the Fourth Proportional to 399,209.45, 549,510.67 and 348,132.06

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Solution

The fourth proportional to 399,209.45, 549,510.67 and 348,132.06 is: 479,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,209.45 : 549,510.67 = 348,132.06 : x
  2. Step 2: Convert to fraction form
    399,209.45/549,510.67 = 348,132.06/x
  3. Step 3: Cross multiply
    399,209.45x = 549,510.67 × 348,132.06
  4. Step 4: Simplify right side
    399,209.45x = 191,302,281,974.25
  5. Step 5: Solve for x
    x = 191,302,281,974.25/399,209.45
  6. Step 6: Final answer
    x = 479,202.80

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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.