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Finding the Fourth Proportional to 292,606.40, 438,646.80 and 115,234.40

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Solution

The fourth proportional to 292,606.40, 438,646.80 and 115,234.40 is: 172,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,606.40 : 438,646.80 = 115,234.40 : x
  2. Step 2: Convert to fraction form
    292,606.40/438,646.80 = 115,234.40/x
  3. Step 3: Cross multiply
    292,606.40x = 438,646.80 × 115,234.40
  4. Step 4: Simplify right side
    292,606.40x = 50,547,200,809.92
  5. Step 5: Solve for x
    x = 50,547,200,809.92/292,606.40
  6. Step 6: Final answer
    x = 172,748.10

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1.5x scale

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.