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Finding the Fourth Proportional to 305,417.47, 421,526.72 and 169,495.09

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Solution

The fourth proportional to 305,417.47, 421,526.72 and 169,495.09 is: 233,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,417.47 : 421,526.72 = 169,495.09 : x
  2. Step 2: Convert to fraction form
    305,417.47/421,526.72 = 169,495.09/x
  3. Step 3: Cross multiply
    305,417.47x = 421,526.72 × 169,495.09
  4. Step 4: Simplify right side
    305,417.47x = 71,446,706,388.70
  5. Step 5: Solve for x
    x = 71,446,706,388.70/305,417.47
  6. Step 6: Final answer
    x = 233,931.31

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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.