Home / 219,820,178.13-329,731,404.53-128,879,994.21

Finding the Fourth Proportional to 219,820,178.13, 329,731,404.53 and 128,879,994.21

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Solution

The fourth proportional to 219,820,178.13, 329,731,404.53 and 128,879,994.21 is: 193,320,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,820,178.13 : 329,731,404.53 = 128,879,994.21 : x
  2. Step 2: Convert to fraction form
    219,820,178.13/329,731,404.53 = 128,879,994.21/x
  3. Step 3: Cross multiply
    219,820,178.13x = 329,731,404.53 × 128,879,994.21
  4. Step 4: Simplify right side
    219,820,178.13x = 42,495,781,506,037,160
  5. Step 5: Solve for x
    x = 42,495,781,506,037,160/219,820,178.13
  6. Step 6: Final answer
    x = 193,320,658.13

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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.