Home / 380,543.13-525,149.51-210,788.19

Finding the Fourth Proportional to 380,543.13, 525,149.51 and 210,788.19

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Solution

The fourth proportional to 380,543.13, 525,149.51 and 210,788.19 is: 290,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,543.13 : 525,149.51 = 210,788.19 : x
  2. Step 2: Convert to fraction form
    380,543.13/525,149.51 = 210,788.19/x
  3. Step 3: Cross multiply
    380,543.13x = 525,149.51 × 210,788.19
  4. Step 4: Simplify right side
    380,543.13x = 110,695,314,692.29
  5. Step 5: Solve for x
    x = 110,695,314,692.29/380,543.13
  6. Step 6: Final answer
    x = 290,887.70

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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.