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Finding the Fourth Proportional to 371,211.01, 512,006.55 and 340,682.51

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Solution

The fourth proportional to 371,211.01, 512,006.55 and 340,682.51 is: 469,898.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,211.01 : 512,006.55 = 340,682.51 : x
  2. Step 2: Convert to fraction form
    371,211.01/512,006.55 = 340,682.51/x
  3. Step 3: Cross multiply
    371,211.01x = 512,006.55 × 340,682.51
  4. Step 4: Simplify right side
    371,211.01x = 174,431,674,030.41
  5. Step 5: Solve for x
    x = 174,431,674,030.41/371,211.01
  6. Step 6: Final answer
    x = 469,898.98

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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.