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Finding the Fourth Proportional to 346,706.63, 478,312.65 and 210,718.67

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Solution

The fourth proportional to 346,706.63, 478,312.65 and 210,718.67 is: 290,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,706.63 : 478,312.65 = 210,718.67 : x
  2. Step 2: Convert to fraction form
    346,706.63/478,312.65 = 210,718.67/x
  3. Step 3: Cross multiply
    346,706.63x = 478,312.65 × 210,718.67
  4. Step 4: Simplify right side
    346,706.63x = 100,789,403,060.61
  5. Step 5: Solve for x
    x = 100,789,403,060.61/346,706.63
  6. Step 6: Final answer
    x = 290,705.15

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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.