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Finding the Fourth Proportional to 401,135.90, 600,347.57 and 390,341.07

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Solution

The fourth proportional to 401,135.90, 600,347.57 and 390,341.07 is: 584,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,135.90 : 600,347.57 = 390,341.07 : x
  2. Step 2: Convert to fraction form
    401,135.90/600,347.57 = 390,341.07/x
  3. Step 3: Cross multiply
    401,135.90x = 600,347.57 × 390,341.07
  4. Step 4: Simplify right side
    401,135.90x = 234,340,310,894.00
  5. Step 5: Solve for x
    x = 234,340,310,894.00/401,135.90
  6. Step 6: Final answer
    x = 584,191.83

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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.