Home / 218,946.07-302,148.93-128,280.34

Finding the Fourth Proportional to 218,946.07, 302,148.93 and 128,280.34

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Solution

The fourth proportional to 218,946.07, 302,148.93 and 128,280.34 is: 177,028.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,946.07 : 302,148.93 = 128,280.34 : x
  2. Step 2: Convert to fraction form
    218,946.07/302,148.93 = 128,280.34/x
  3. Step 3: Cross multiply
    218,946.07x = 302,148.93 × 128,280.34
  4. Step 4: Simplify right side
    218,946.07x = 38,759,767,471.04
  5. Step 5: Solve for x
    x = 38,759,767,471.04/218,946.07
  6. Step 6: Final answer
    x = 177,028.83

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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.