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Finding the Fourth Proportional to 235,643.70, 353,465.55 and 210,055.80

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Solution

The fourth proportional to 235,643.70, 353,465.55 and 210,055.80 is: 315,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,643.70 : 353,465.55 = 210,055.80 : x
  2. Step 2: Convert to fraction form
    235,643.70/353,465.55 = 210,055.80/x
  3. Step 3: Cross multiply
    235,643.70x = 353,465.55 × 210,055.80
  4. Step 4: Simplify right side
    235,643.70x = 74,247,488,877.69
  5. Step 5: Solve for x
    x = 74,247,488,877.69/235,643.70
  6. Step 6: Final answer
    x = 315,083.70

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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.