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Finding the Fourth Proportional to 312,303.70, 430,980.47 and 169,063.74

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Solution

The fourth proportional to 312,303.70, 430,980.47 and 169,063.74 is: 233,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,303.70 : 430,980.47 = 169,063.74 : x
  2. Step 2: Convert to fraction form
    312,303.70/430,980.47 = 169,063.74/x
  3. Step 3: Cross multiply
    312,303.70x = 430,980.47 × 169,063.74
  4. Step 4: Simplify right side
    312,303.70x = 72,863,170,547.82
  5. Step 5: Solve for x
    x = 72,863,170,547.82/312,303.70
  6. Step 6: Final answer
    x = 233,308.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.