Home / 289,582.40-434,416.80-102,579.20

Finding the Fourth Proportional to 289,582.40, 434,416.80 and 102,579.20

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Solution

The fourth proportional to 289,582.40, 434,416.80 and 102,579.20 is: 153,884.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,582.40 : 434,416.80 = 102,579.20 : x
  2. Step 2: Convert to fraction form
    289,582.40/434,416.80 = 102,579.20/x
  3. Step 3: Cross multiply
    289,582.40x = 434,416.80 × 102,579.20
  4. Step 4: Simplify right side
    289,582.40x = 44,562,127,810.56
  5. Step 5: Solve for x
    x = 44,562,127,810.56/289,582.40
  6. Step 6: Final answer
    x = 153,884.10

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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.