Home / 219,271.32-302,543.10-128,622.60

Finding the Fourth Proportional to 219,271.32, 302,543.10 and 128,622.60

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Solution

The fourth proportional to 219,271.32, 302,543.10 and 128,622.60 is: 177,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,271.32 : 302,543.10 = 128,622.60 : x
  2. Step 2: Convert to fraction form
    219,271.32/302,543.10 = 128,622.60/x
  3. Step 3: Cross multiply
    219,271.32x = 302,543.10 × 128,622.60
  4. Step 4: Simplify right side
    219,271.32x = 38,913,880,134.06
  5. Step 5: Solve for x
    x = 38,913,880,134.06/219,271.32
  6. Step 6: Final answer
    x = 177,469.08

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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.