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Finding the Fourth Proportional to 556,700.64, 835,043.66 and 135,980.16

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Solution

The fourth proportional to 556,700.64, 835,043.66 and 135,980.16 is: 203,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,700.64 : 835,043.66 = 135,980.16 : x
  2. Step 2: Convert to fraction form
    556,700.64/835,043.66 = 135,980.16/x
  3. Step 3: Cross multiply
    556,700.64x = 835,043.66 × 135,980.16
  4. Step 4: Simplify right side
    556,700.64x = 113,549,370,493.79
  5. Step 5: Solve for x
    x = 113,549,370,493.79/556,700.64
  6. Step 6: Final answer
    x = 203,968.46

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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.