Home / 278,746.47-384,651-151,419.33

Finding the Fourth Proportional to 278,746.47, 384,651 and 151,419.33

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Solution

The fourth proportional to 278,746.47, 384,651 and 151,419.33 is: 208,948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,746.47 : 384,651 = 151,419.33 : x
  2. Step 2: Convert to fraction form
    278,746.47/384,651 = 151,419.33/x
  3. Step 3: Cross multiply
    278,746.47x = 384,651 × 151,419.33
  4. Step 4: Simplify right side
    278,746.47x = 58,243,596,703.83
  5. Step 5: Solve for x
    x = 58,243,596,703.83/278,746.47
  6. Step 6: Final answer
    x = 208,948.28

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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.