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Finding the Fourth Proportional to 257,479.44, 355,302.08 and 144,280.32

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Solution

The fourth proportional to 257,479.44, 355,302.08 and 144,280.32 is: 199,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,479.44 : 355,302.08 = 144,280.32 : x
  2. Step 2: Convert to fraction form
    257,479.44/355,302.08 = 144,280.32/x
  3. Step 3: Cross multiply
    257,479.44x = 355,302.08 × 144,280.32
  4. Step 4: Simplify right side
    257,479.44x = 51,263,097,799.07
  5. Step 5: Solve for x
    x = 51,263,097,799.07/257,479.44
  6. Step 6: Final answer
    x = 199,095.89

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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.