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Finding the Fourth Proportional to 209,712.40, 313,877.40 and 162,710.80

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Solution

The fourth proportional to 209,712.40, 313,877.40 and 162,710.80 is: 243,529.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,712.40 : 313,877.40 = 162,710.80 : x
  2. Step 2: Convert to fraction form
    209,712.40/313,877.40 = 162,710.80/x
  3. Step 3: Cross multiply
    209,712.40x = 313,877.40 × 162,710.80
  4. Step 4: Simplify right side
    209,712.40x = 51,071,242,855.92
  5. Step 5: Solve for x
    x = 51,071,242,855.92/209,712.40
  6. Step 6: Final answer
    x = 243,529.91

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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.