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Finding the Fourth Proportional to 341,804.36, 512,707.80 and 105,145.40

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Solution

The fourth proportional to 341,804.36, 512,707.80 and 105,145.40 is: 157,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,804.36 : 512,707.80 = 105,145.40 : x
  2. Step 2: Convert to fraction form
    341,804.36/512,707.80 = 105,145.40/x
  3. Step 3: Cross multiply
    341,804.36x = 512,707.80 × 105,145.40
  4. Step 4: Simplify right side
    341,804.36x = 53,908,866,714.12
  5. Step 5: Solve for x
    x = 53,908,866,714.12/341,804.36
  6. Step 6: Final answer
    x = 157,718.49

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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.