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Finding the Fourth Proportional to 388,903.60, 583,585.80 and 283,457.20

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Solution

The fourth proportional to 388,903.60, 583,585.80 and 283,457.20 is: 425,353.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,903.60 : 583,585.80 = 283,457.20 : x
  2. Step 2: Convert to fraction form
    388,903.60/583,585.80 = 283,457.20/x
  3. Step 3: Cross multiply
    388,903.60x = 583,585.80 × 283,457.20
  4. Step 4: Simplify right side
    388,903.60x = 165,421,596,827.76
  5. Step 5: Solve for x
    x = 165,421,596,827.76/388,903.60
  6. Step 6: Final answer
    x = 425,353.73

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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.