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Finding the Fourth Proportional to 228,897.10, 343,345.65 and 212,308.30

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Solution

The fourth proportional to 228,897.10, 343,345.65 and 212,308.30 is: 318,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,897.10 : 343,345.65 = 212,308.30 : x
  2. Step 2: Convert to fraction form
    228,897.10/343,345.65 = 212,308.30/x
  3. Step 3: Cross multiply
    228,897.10x = 343,345.65 × 212,308.30
  4. Step 4: Simplify right side
    228,897.10x = 72,895,131,263.90
  5. Step 5: Solve for x
    x = 72,895,131,263.90/228,897.10
  6. Step 6: Final answer
    x = 318,462.45

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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.