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Finding the Fourth Proportional to 346,497.50, 478,166.55 and 187,521.50

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Solution

The fourth proportional to 346,497.50, 478,166.55 and 187,521.50 is: 258,779.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,497.50 : 478,166.55 = 187,521.50 : x
  2. Step 2: Convert to fraction form
    346,497.50/478,166.55 = 187,521.50/x
  3. Step 3: Cross multiply
    346,497.50x = 478,166.55 × 187,521.50
  4. Step 4: Simplify right side
    346,497.50x = 89,666,508,705.83
  5. Step 5: Solve for x
    x = 89,666,508,705.83/346,497.50
  6. Step 6: Final answer
    x = 258,779.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.