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Finding the Fourth Proportional to 557,166.96, 768,848.40 and 315,394.10

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Solution

The fourth proportional to 557,166.96, 768,848.40 and 315,394.10 is: 435,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,166.96 : 768,848.40 = 315,394.10 : x
  2. Step 2: Convert to fraction form
    557,166.96/768,848.40 = 315,394.10/x
  3. Step 3: Cross multiply
    557,166.96x = 768,848.40 × 315,394.10
  4. Step 4: Simplify right side
    557,166.96x = 242,490,249,154.44
  5. Step 5: Solve for x
    x = 242,490,249,154.44/557,166.96
  6. Step 6: Final answer
    x = 435,220.08

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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.