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Finding the Fourth Proportional to 403,987.76, 557,437.92 and 242,804.24

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Solution

The fourth proportional to 403,987.76, 557,437.92 and 242,804.24 is: 335,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,987.76 : 557,437.92 = 242,804.24 : x
  2. Step 2: Convert to fraction form
    403,987.76/557,437.92 = 242,804.24/x
  3. Step 3: Cross multiply
    403,987.76x = 557,437.92 × 242,804.24
  4. Step 4: Simplify right side
    403,987.76x = 135,348,290,512.78
  5. Step 5: Solve for x
    x = 135,348,290,512.78/403,987.76
  6. Step 6: Final answer
    x = 335,030.67

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1.5x scale

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.