Home / 401,158.20-553,525.74-257,885.40

Finding the Fourth Proportional to 401,158.20, 553,525.74 and 257,885.40

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Solution

The fourth proportional to 401,158.20, 553,525.74 and 257,885.40 is: 355,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,158.20 : 553,525.74 = 257,885.40 : x
  2. Step 2: Convert to fraction form
    401,158.20/553,525.74 = 257,885.40/x
  3. Step 3: Cross multiply
    401,158.20x = 553,525.74 × 257,885.40
  4. Step 4: Simplify right side
    401,158.20x = 142,746,206,870.20
  5. Step 5: Solve for x
    x = 142,746,206,870.20/401,158.20
  6. Step 6: Final answer
    x = 355,835.20

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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.