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Finding the Fourth Proportional to 210,009.80, 314,813.10 and 69,696.20

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Solution

The fourth proportional to 210,009.80, 314,813.10 and 69,696.20 is: 104,477.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,009.80 : 314,813.10 = 69,696.20 : x
  2. Step 2: Convert to fraction form
    210,009.80/314,813.10 = 69,696.20/x
  3. Step 3: Cross multiply
    210,009.80x = 314,813.10 × 69,696.20
  4. Step 4: Simplify right side
    210,009.80x = 21,941,276,780.22
  5. Step 5: Solve for x
    x = 21,941,276,780.22/210,009.80
  6. Step 6: Final answer
    x = 104,477.39

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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.