Home / 430,854.74-646,281.60-115,303.43

Finding the Fourth Proportional to 430,854.74, 646,281.60 and 115,303.43

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Solution

The fourth proportional to 430,854.74, 646,281.60 and 115,303.43 is: 172,955.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,854.74 : 646,281.60 = 115,303.43 : x
  2. Step 2: Convert to fraction form
    430,854.74/646,281.60 = 115,303.43/x
  3. Step 3: Cross multiply
    430,854.74x = 646,281.60 × 115,303.43
  4. Step 4: Simplify right side
    430,854.74x = 74,518,485,225.89
  5. Step 5: Solve for x
    x = 74,518,485,225.89/430,854.74
  6. Step 6: Final answer
    x = 172,955.01

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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.