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Finding the Fourth Proportional to 304,675.35, 420,889.93 and 243,341.01

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Solution

The fourth proportional to 304,675.35, 420,889.93 and 243,341.01 is: 336,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,675.35 : 420,889.93 = 243,341.01 : x
  2. Step 2: Convert to fraction form
    304,675.35/420,889.93 = 243,341.01/x
  3. Step 3: Cross multiply
    304,675.35x = 420,889.93 × 243,341.01
  4. Step 4: Simplify right side
    304,675.35x = 102,419,778,560.58
  5. Step 5: Solve for x
    x = 102,419,778,560.58/304,675.35
  6. Step 6: Final answer
    x = 336,160.38

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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.