Home / 218,817,376.40-328,226,064.60-208,739,680.40

Finding the Fourth Proportional to 218,817,376.40, 328,226,064.60 and 208,739,680.40

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Solution

The fourth proportional to 218,817,376.40, 328,226,064.60 and 208,739,680.40 is: 313,109,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,817,376.40 : 328,226,064.60 = 208,739,680.40 : x
  2. Step 2: Convert to fraction form
    218,817,376.40/328,226,064.60 = 208,739,680.40/x
  3. Step 3: Cross multiply
    218,817,376.40x = 328,226,064.60 × 208,739,680.40
  4. Step 4: Simplify right side
    218,817,376.40x = 68,513,803,823,553,760
  5. Step 5: Solve for x
    x = 68,513,803,823,553,760/218,817,376.40
  6. Step 6: Final answer
    x = 313,109,520.60

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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.