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Finding the Fourth Proportional to 292,037.28, 438,056.28 and 70,421.28

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Solution

The fourth proportional to 292,037.28, 438,056.28 and 70,421.28 is: 105,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,037.28 : 438,056.28 = 70,421.28 : x
  2. Step 2: Convert to fraction form
    292,037.28/438,056.28 = 70,421.28/x
  3. Step 3: Cross multiply
    292,037.28x = 438,056.28 × 70,421.28
  4. Step 4: Simplify right side
    292,037.28x = 30,848,483,949.64
  5. Step 5: Solve for x
    x = 30,848,483,949.64/292,037.28
  6. Step 6: Final answer
    x = 105,632.01

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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.