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Finding the Fourth Proportional to 351,036.90, 526,555.35 and 291,987.90

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Solution

The fourth proportional to 351,036.90, 526,555.35 and 291,987.90 is: 437,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,036.90 : 526,555.35 = 291,987.90 : x
  2. Step 2: Convert to fraction form
    351,036.90/526,555.35 = 291,987.90/x
  3. Step 3: Cross multiply
    351,036.90x = 526,555.35 × 291,987.90
  4. Step 4: Simplify right side
    351,036.90x = 153,747,790,880.27
  5. Step 5: Solve for x
    x = 153,747,790,880.27/351,036.90
  6. Step 6: Final answer
    x = 437,981.85

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Double scale
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1.5x scale

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.