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Finding the Fourth Proportional to 260,184.84, 390,303.36 and 70,648.08

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Solution

The fourth proportional to 260,184.84, 390,303.36 and 70,648.08 is: 105,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,184.84 : 390,303.36 = 70,648.08 : x
  2. Step 2: Convert to fraction form
    260,184.84/390,303.36 = 70,648.08/x
  3. Step 3: Cross multiply
    260,184.84x = 390,303.36 × 70,648.08
  4. Step 4: Simplify right side
    260,184.84x = 27,574,183,001.55
  5. Step 5: Solve for x
    x = 27,574,183,001.55/260,184.84
  6. Step 6: Final answer
    x = 105,979.21

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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.