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Finding the Fourth Proportional to 430,762.01, 646,142.84 and 115,210.72

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Solution

The fourth proportional to 430,762.01, 646,142.84 and 115,210.72 is: 172,816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,762.01 : 646,142.84 = 115,210.72 : x
  2. Step 2: Convert to fraction form
    430,762.01/646,142.84 = 115,210.72/x
  3. Step 3: Cross multiply
    430,762.01x = 646,142.84 × 115,210.72
  4. Step 4: Simplify right side
    430,762.01x = 74,442,578,012.48
  5. Step 5: Solve for x
    x = 74,442,578,012.48/430,762.01
  6. Step 6: Final answer
    x = 172,816.02

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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.