Home / 278,705.90-384,587.64-157,823.93

Finding the Fourth Proportional to 278,705.90, 384,587.64 and 157,823.93

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Solution

The fourth proportional to 278,705.90, 384,587.64 and 157,823.93 is: 217,782.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,705.90 : 384,587.64 = 157,823.93 : x
  2. Step 2: Convert to fraction form
    278,705.90/384,587.64 = 157,823.93/x
  3. Step 3: Cross multiply
    278,705.90x = 384,587.64 × 157,823.93
  4. Step 4: Simplify right side
    278,705.90x = 60,697,130,851.29
  5. Step 5: Solve for x
    x = 60,697,130,851.29/278,705.90
  6. Step 6: Final answer
    x = 217,782.01

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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.