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Finding the Fourth Proportional to 315,038.14, 472,492.77 and 90,338.38

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Solution

The fourth proportional to 315,038.14, 472,492.77 and 90,338.38 is: 135,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,038.14 : 472,492.77 = 90,338.38 : x
  2. Step 2: Convert to fraction form
    315,038.14/472,492.77 = 90,338.38/x
  3. Step 3: Cross multiply
    315,038.14x = 472,492.77 × 90,338.38
  4. Step 4: Simplify right side
    315,038.14x = 42,684,231,403.51
  5. Step 5: Solve for x
    x = 42,684,231,403.51/315,038.14
  6. Step 6: Final answer
    x = 135,489.09

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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.