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Finding the Fourth Proportional to 292,362.30, 438,543.45 and 105,306.30

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Solution

The fourth proportional to 292,362.30, 438,543.45 and 105,306.30 is: 157,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,362.30 : 438,543.45 = 105,306.30 : x
  2. Step 2: Convert to fraction form
    292,362.30/438,543.45 = 105,306.30/x
  3. Step 3: Cross multiply
    292,362.30x = 438,543.45 × 105,306.30
  4. Step 4: Simplify right side
    292,362.30x = 46,181,388,108.74
  5. Step 5: Solve for x
    x = 46,181,388,108.74/292,362.30
  6. Step 6: Final answer
    x = 157,959.45

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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.