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Finding the Fourth Proportional to 288,047.60, 432,071.40 and 260,491.40

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Solution

The fourth proportional to 288,047.60, 432,071.40 and 260,491.40 is: 390,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,047.60 : 432,071.40 = 260,491.40 : x
  2. Step 2: Convert to fraction form
    288,047.60/432,071.40 = 260,491.40/x
  3. Step 3: Cross multiply
    288,047.60x = 432,071.40 × 260,491.40
  4. Step 4: Simplify right side
    288,047.60x = 112,550,883,885.96
  5. Step 5: Solve for x
    x = 112,550,883,885.96/288,047.60
  6. Step 6: Final answer
    x = 390,737.10

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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.