Home / 290,320.53-435,438.55-90,594.45

Finding the Fourth Proportional to 290,320.53, 435,438.55 and 90,594.45

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Solution

The fourth proportional to 290,320.53, 435,438.55 and 90,594.45 is: 135,878.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,320.53 : 435,438.55 = 90,594.45 : x
  2. Step 2: Convert to fraction form
    290,320.53/435,438.55 = 90,594.45/x
  3. Step 3: Cross multiply
    290,320.53x = 435,438.55 × 90,594.45
  4. Step 4: Simplify right side
    290,320.53x = 39,448,315,946.05
  5. Step 5: Solve for x
    x = 39,448,315,946.05/290,320.53
  6. Step 6: Final answer
    x = 135,878.49

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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.