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Finding the Fourth Proportional to 219,088.40, 328,632.60 and 112,800.20

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Solution

The fourth proportional to 219,088.40, 328,632.60 and 112,800.20 is: 169,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,088.40 : 328,632.60 = 112,800.20 : x
  2. Step 2: Convert to fraction form
    219,088.40/328,632.60 = 112,800.20/x
  3. Step 3: Cross multiply
    219,088.40x = 328,632.60 × 112,800.20
  4. Step 4: Simplify right side
    219,088.40x = 37,069,823,006.52
  5. Step 5: Solve for x
    x = 37,069,823,006.52/219,088.40
  6. Step 6: Final answer
    x = 169,200.30

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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.