Home / 260,349.78-390,384.25-118,117.45

Finding the Fourth Proportional to 260,349.78, 390,384.25 and 118,117.45

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Solution

The fourth proportional to 260,349.78, 390,384.25 and 118,117.45 is: 177,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,349.78 : 390,384.25 = 118,117.45 : x
  2. Step 2: Convert to fraction form
    260,349.78/390,384.25 = 118,117.45/x
  3. Step 3: Cross multiply
    260,349.78x = 390,384.25 × 118,117.45
  4. Step 4: Simplify right side
    260,349.78x = 46,111,191,301.85
  5. Step 5: Solve for x
    x = 46,111,191,301.85/260,349.78
  6. Step 6: Final answer
    x = 177,112.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.