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Finding the Fourth Proportional to 556,877.30, 768,486.15 and 302,228.55

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Solution

The fourth proportional to 556,877.30, 768,486.15 and 302,228.55 is: 417,072.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,877.30 : 768,486.15 = 302,228.55 : x
  2. Step 2: Convert to fraction form
    556,877.30/768,486.15 = 302,228.55/x
  3. Step 3: Cross multiply
    556,877.30x = 768,486.15 × 302,228.55
  4. Step 4: Simplify right side
    556,877.30x = 232,258,454,809.58
  5. Step 5: Solve for x
    x = 232,258,454,809.58/556,877.30
  6. Step 6: Final answer
    x = 417,072.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.