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Finding the Fourth Proportional to 346,780, 478,595.36 and 195,886.72

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Solution

The fourth proportional to 346,780, 478,595.36 and 195,886.72 is: 270,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,780 : 478,595.36 = 195,886.72 : x
  2. Step 2: Convert to fraction form
    346,780/478,595.36 = 195,886.72/x
  3. Step 3: Cross multiply
    346,780x = 478,595.36 × 195,886.72
  4. Step 4: Simplify right side
    346,780x = 93,750,475,277.62
  5. Step 5: Solve for x
    x = 93,750,475,277.62/346,780
  6. Step 6: Final answer
    x = 270,345.68

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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.