Home / 289,928.08-434,934.06-90,266.32

Finding the Fourth Proportional to 289,928.08, 434,934.06 and 90,266.32

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Solution

The fourth proportional to 289,928.08, 434,934.06 and 90,266.32 is: 135,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,928.08 : 434,934.06 = 90,266.32 : x
  2. Step 2: Convert to fraction form
    289,928.08/434,934.06 = 90,266.32/x
  3. Step 3: Cross multiply
    289,928.08x = 434,934.06 × 90,266.32
  4. Step 4: Simplify right side
    289,928.08x = 39,259,897,038.86
  5. Step 5: Solve for x
    x = 39,259,897,038.86/289,928.08
  6. Step 6: Final answer
    x = 135,412.54

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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.