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Finding the Fourth Proportional to 285,703.56, 428,569.01 and 235,690.92

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Solution

The fourth proportional to 285,703.56, 428,569.01 and 235,690.92 is: 353,547.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,703.56 : 428,569.01 = 235,690.92 : x
  2. Step 2: Convert to fraction form
    285,703.56/428,569.01 = 235,690.92/x
  3. Step 3: Cross multiply
    285,703.56x = 428,569.01 × 235,690.92
  4. Step 4: Simplify right side
    285,703.56x = 101,009,823,955.78
  5. Step 5: Solve for x
    x = 101,009,823,955.78/285,703.56
  6. Step 6: Final answer
    x = 353,547.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.