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Finding the Fourth Proportional to 310,637.98, 465,273.98 and 256,718.87

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Solution

The fourth proportional to 310,637.98, 465,273.98 and 256,718.87 is: 384,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,637.98 : 465,273.98 = 256,718.87 : x
  2. Step 2: Convert to fraction form
    310,637.98/465,273.98 = 256,718.87/x
  3. Step 3: Cross multiply
    310,637.98x = 465,273.98 × 256,718.87
  4. Step 4: Simplify right side
    310,637.98x = 119,444,610,386.00
  5. Step 5: Solve for x
    x = 119,444,610,386.00/310,637.98
  6. Step 6: Final answer
    x = 384,513.87

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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.