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Finding the Fourth Proportional to 542,666.25, 748,879.43 and 300,985.83

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Solution

The fourth proportional to 542,666.25, 748,879.43 and 300,985.83 is: 415,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,666.25 : 748,879.43 = 300,985.83 : x
  2. Step 2: Convert to fraction form
    542,666.25/748,879.43 = 300,985.83/x
  3. Step 3: Cross multiply
    542,666.25x = 748,879.43 × 300,985.83
  4. Step 4: Simplify right side
    542,666.25x = 225,402,095,303.55
  5. Step 5: Solve for x
    x = 225,402,095,303.55/542,666.25
  6. Step 6: Final answer
    x = 415,360.45

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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.