Home / 208,009,688.40-312,014,532.60-156,613,438.80

Finding the Fourth Proportional to 208,009,688.40, 312,014,532.60 and 156,613,438.80

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Solution

The fourth proportional to 208,009,688.40, 312,014,532.60 and 156,613,438.80 is: 234,920,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,688.40 : 312,014,532.60 = 156,613,438.80 : x
  2. Step 2: Convert to fraction form
    208,009,688.40/312,014,532.60 = 156,613,438.80/x
  3. Step 3: Cross multiply
    208,009,688.40x = 312,014,532.60 × 156,613,438.80
  4. Step 4: Simplify right side
    208,009,688.40x = 48,865,668,906,060,712
  5. Step 5: Solve for x
    x = 48,865,668,906,060,712/208,009,688.40
  6. Step 6: Final answer
    x = 234,920,158.20

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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.