Home / 289,901.09-434,851.61-170,140.28

Finding the Fourth Proportional to 289,901.09, 434,851.61 and 170,140.28

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Solution

The fourth proportional to 289,901.09, 434,851.61 and 170,140.28 is: 255,210.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,901.09 : 434,851.61 = 170,140.28 : x
  2. Step 2: Convert to fraction form
    289,901.09/434,851.61 = 170,140.28/x
  3. Step 3: Cross multiply
    289,901.09x = 434,851.61 × 170,140.28
  4. Step 4: Simplify right side
    289,901.09x = 73,985,771,658.89
  5. Step 5: Solve for x
    x = 73,985,771,658.89/289,901.09
  6. Step 6: Final answer
    x = 255,210.39

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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.