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Finding the Fourth Proportional to 287,271.99, 430,907.52 and 286,856.46

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Solution

The fourth proportional to 287,271.99, 430,907.52 and 286,856.46 is: 430,284.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,271.99 : 430,907.52 = 286,856.46 : x
  2. Step 2: Convert to fraction form
    287,271.99/430,907.52 = 286,856.46/x
  3. Step 3: Cross multiply
    287,271.99x = 430,907.52 × 286,856.46
  4. Step 4: Simplify right side
    287,271.99x = 123,608,605,774.58
  5. Step 5: Solve for x
    x = 123,608,605,774.58/287,271.99
  6. Step 6: Final answer
    x = 430,284.23

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1.5x scale

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.