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Finding the Fourth Proportional to 213,065.40, 319,598.10 and 199,241.40

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Solution

The fourth proportional to 213,065.40, 319,598.10 and 199,241.40 is: 298,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,065.40 : 319,598.10 = 199,241.40 : x
  2. Step 2: Convert to fraction form
    213,065.40/319,598.10 = 199,241.40/x
  3. Step 3: Cross multiply
    213,065.40x = 319,598.10 × 199,241.40
  4. Step 4: Simplify right side
    213,065.40x = 63,677,172,881.34
  5. Step 5: Solve for x
    x = 63,677,172,881.34/213,065.40
  6. Step 6: Final answer
    x = 298,862.10

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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.