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Finding the Fourth Proportional to 245,718.74, 368,666.82 and 85,818.22

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Solution

The fourth proportional to 245,718.74, 368,666.82 and 85,818.22 is: 128,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,718.74 : 368,666.82 = 85,818.22 : x
  2. Step 2: Convert to fraction form
    245,718.74/368,666.82 = 85,818.22/x
  3. Step 3: Cross multiply
    245,718.74x = 368,666.82 × 85,818.22
  4. Step 4: Simplify right side
    245,718.74x = 31,638,329,343.79
  5. Step 5: Solve for x
    x = 31,638,329,343.79/245,718.74
  6. Step 6: Final answer
    x = 128,758.31

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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.