Home / 317,923.96-474,828.05-287,878.20

Finding the Fourth Proportional to 317,923.96, 474,828.05 and 287,878.20

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Solution

The fourth proportional to 317,923.96, 474,828.05 and 287,878.20 is: 429,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,923.96 : 474,828.05 = 287,878.20 : x
  2. Step 2: Convert to fraction form
    317,923.96/474,828.05 = 287,878.20/x
  3. Step 3: Cross multiply
    317,923.96x = 474,828.05 × 287,878.20
  4. Step 4: Simplify right side
    317,923.96x = 136,692,644,343.51
  5. Step 5: Solve for x
    x = 136,692,644,343.51/317,923.96
  6. Step 6: Final answer
    x = 429,953.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.