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Finding the Fourth Proportional to 249,478.64, 344,644.80 and 215,886.32

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Solution

The fourth proportional to 249,478.64, 344,644.80 and 215,886.32 is: 298,238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,478.64 : 344,644.80 = 215,886.32 : x
  2. Step 2: Convert to fraction form
    249,478.64/344,644.80 = 215,886.32/x
  3. Step 3: Cross multiply
    249,478.64x = 344,644.80 × 215,886.32
  4. Step 4: Simplify right side
    249,478.64x = 74,404,097,579.14
  5. Step 5: Solve for x
    x = 74,404,097,579.14/249,478.64
  6. Step 6: Final answer
    x = 298,238.35

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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.