Home / 288,050.40-432,075.60-77,688.33

Finding the Fourth Proportional to 288,050.40, 432,075.60 and 77,688.33

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Solution

The fourth proportional to 288,050.40, 432,075.60 and 77,688.33 is: 116,532.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,050.40 : 432,075.60 = 77,688.33 : x
  2. Step 2: Convert to fraction form
    288,050.40/432,075.60 = 77,688.33/x
  3. Step 3: Cross multiply
    288,050.40x = 432,075.60 × 77,688.33
  4. Step 4: Simplify right side
    288,050.40x = 33,567,231,797.75
  5. Step 5: Solve for x
    x = 33,567,231,797.75/288,050.40
  6. Step 6: Final answer
    x = 116,532.50

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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.