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Finding the Fourth Proportional to 427,019.17, 589,345.05 and 245,727.40

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Solution

The fourth proportional to 427,019.17, 589,345.05 and 245,727.40 is: 339,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,019.17 : 589,345.05 = 245,727.40 : x
  2. Step 2: Convert to fraction form
    427,019.17/589,345.05 = 245,727.40/x
  3. Step 3: Cross multiply
    427,019.17x = 589,345.05 × 245,727.40
  4. Step 4: Simplify right side
    427,019.17x = 144,818,226,839.37
  5. Step 5: Solve for x
    x = 144,818,226,839.37/427,019.17
  6. Step 6: Final answer
    x = 339,137.53

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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.