Home / 309,746.36-427,600.18-207,734.51

Finding the Fourth Proportional to 309,746.36, 427,600.18 and 207,734.51

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Solution

The fourth proportional to 309,746.36, 427,600.18 and 207,734.51 is: 286,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,746.36 : 427,600.18 = 207,734.51 : x
  2. Step 2: Convert to fraction form
    309,746.36/427,600.18 = 207,734.51/x
  3. Step 3: Cross multiply
    309,746.36x = 427,600.18 × 207,734.51
  4. Step 4: Simplify right side
    309,746.36x = 88,827,315,196.88
  5. Step 5: Solve for x
    x = 88,827,315,196.88/309,746.36
  6. Step 6: Final answer
    x = 286,774.36

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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.