Home / 219,302.91-302,688-142,686.83

Finding the Fourth Proportional to 219,302.91, 302,688 and 142,686.83

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Solution

The fourth proportional to 219,302.91, 302,688 and 142,686.83 is: 196,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,302.91 : 302,688 = 142,686.83 : x
  2. Step 2: Convert to fraction form
    219,302.91/302,688 = 142,686.83/x
  3. Step 3: Cross multiply
    219,302.91x = 302,688 × 142,686.83
  4. Step 4: Simplify right side
    219,302.91x = 43,189,591,199.04
  5. Step 5: Solve for x
    x = 43,189,591,199.04/219,302.91
  6. Step 6: Final answer
    x = 196,940.35

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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.