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Finding the Fourth Proportional to 253,030.79, 348,956.33 and 209,942.07

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Solution

The fourth proportional to 253,030.79, 348,956.33 and 209,942.07 is: 289,532.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,030.79 : 348,956.33 = 209,942.07 : x
  2. Step 2: Convert to fraction form
    253,030.79/348,956.33 = 209,942.07/x
  3. Step 3: Cross multiply
    253,030.79x = 348,956.33 × 209,942.07
  4. Step 4: Simplify right side
    253,030.79x = 73,260,614,259.80
  5. Step 5: Solve for x
    x = 73,260,614,259.80/253,030.79
  6. Step 6: Final answer
    x = 289,532.41

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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.