Home / 346,513.12-478,229.60-210,569.28

Finding the Fourth Proportional to 346,513.12, 478,229.60 and 210,569.28

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Solution

The fourth proportional to 346,513.12, 478,229.60 and 210,569.28 is: 290,610.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,513.12 : 478,229.60 = 210,569.28 : x
  2. Step 2: Convert to fraction form
    346,513.12/478,229.60 = 210,569.28/x
  3. Step 3: Cross multiply
    346,513.12x = 478,229.60 × 210,569.28
  4. Step 4: Simplify right side
    346,513.12x = 100,700,462,546.69
  5. Step 5: Solve for x
    x = 100,700,462,546.69/346,513.12
  6. Step 6: Final answer
    x = 290,610.82

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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.