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Finding the Fourth Proportional to 418,999.59, 578,218.37 and 228,012.93

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Solution

The fourth proportional to 418,999.59, 578,218.37 and 228,012.93 is: 314,657.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,999.59 : 578,218.37 = 228,012.93 : x
  2. Step 2: Convert to fraction form
    418,999.59/578,218.37 = 228,012.93/x
  3. Step 3: Cross multiply
    418,999.59x = 578,218.37 × 228,012.93
  4. Step 4: Simplify right side
    418,999.59x = 131,841,263,583.46
  5. Step 5: Solve for x
    x = 131,841,263,583.46/418,999.59
  6. Step 6: Final answer
    x = 314,657.26

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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.