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Finding the Fourth Proportional to 255,655.35, 353,138.27 and 207,437.47

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Solution

The fourth proportional to 255,655.35, 353,138.27 and 207,437.47 is: 286,534.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,655.35 : 353,138.27 = 207,437.47 : x
  2. Step 2: Convert to fraction form
    255,655.35/353,138.27 = 207,437.47/x
  3. Step 3: Cross multiply
    255,655.35x = 353,138.27 × 207,437.47
  4. Step 4: Simplify right side
    255,655.35x = 73,254,107,368.94
  5. Step 5: Solve for x
    x = 73,254,107,368.94/255,655.35
  6. Step 6: Final answer
    x = 286,534.62

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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.